<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div a {
            color:blueviolet;
            font-size:32px;
        }
        li {
            color:red;
            /*border-style: solid;
            border-width: 2px;
            border-color:green;*/
            border:solid 2px green;
            height:20px;
            width:50px;
        }
        ul a {
            color:blue;
        }
        #ol li {
            color:green;
        }
        span {
            display: block;
             border:solid 2px palevioletred;
            height:50px;
            width:200px;
        }
    </style>
</head>
<body>
    <div>
        <a href="#">one div</a>
    </div>
    <ul>
        <li>aaa</li>
        <li>bbb</li>
        <li><a href="#">ccc</a></li>
    </ul>
    <ol>
        <li>111</li>
        <li>222</li>
    </ol>
    <ol id="ol">
        <li>111</li>
        <li>222</li>
    </ol>
    <span>one span</span>
</body>
</html>